21 GHz to 24 GHz, GaAs, MMIC, I/Q Upconverter

The HMC7912 is a compact, gallium arsenide (GaAs), pseudomorphic (pHEMT), monolithic microwave integrated circuit (MMIC) upconverter in a RoHS compliant, low stress, injection molded plastic LFCSP package that operates from 21 GHz to 24 GHz. This device provides a small signal conversion gain of 15 dB with 22 dBc of sideband rejection. The HMC7912 uses a variable gain amplifier preceded by an in-phase/quadrature (I/Q) mixer that is driven by an active 2× LO multiplier. IF1 and IF2 mixer inputs are provided, and an external 90° hybrid is needed to select the required sideband. The I/Q mixer topology reduces the need for filtering of the unwanted sideband. The HMC7912 is a much smaller alternative to hybrid style single sideband (SSB) upconverter assemblies, and it eliminates the need for wire bonding by allowing the use of surface-mount manufacturing techniques.

Applications

* Point to point and point to multipoint radios

* Military radars, electronic warfare (EW), and electronic intelligence (ELINT)

* Satellite communications

* Sensors

* Conversion gain: 15 dB typical

* Sideband rejection: 22 dBc typical

* Input power for 1 dB compression (P1dB): 4 dBm typical

* Output third-order intercept (OIP3): 33 dBm typical

* 2× local oscillator (LO) leakage at RFOUT: 5 dBm typical

* 2× LO leakage at the intermediate frequency (IF) input: −35 dBm typical

* RF return loss: 15 dB typical

* LO return loss: 15 dB typical

* 32-lead, 5 mm × 5 mm LFCSP package